Beidou short message receiving device and method supporting double antennas

Abstract

The invention discloses a short message receiving device and method supporting double antennas. The device comprises a signal processing unit used for receiving and sending signals, a signal receivingmodule connected with the signal processing unit, an L frequency point transmitting channel used for processing and outputting transmitting signals, a radio frequency switch and a signal transmittingmodule controlled by the radio frequency switch. Downlink Beidou signals are received through two S-frequency-point receiving antennas on the front face and the back face of Beidou equipment, the intensity of the Beidou signals received by the double antennas is compared to complete antenna face determination, and the determined L-frequency-point transmitting antenna is automatically switched totransmit uplink Beidou signals. When the device is in any posture, the L-frequency-point transmitting antenna communicated with the Beidou satellite can be automatically switched, reliable Beidou satellite signal receiving and transmitting are realized, and the Beidou short message communication success rate is ensured.

Description

technical field [0001] The invention relates to the field of Beidou communication, in particular to a Beidou short message receiving device and method supporting dual antennas. Background technique [0002] With the development of Beidou satellite navigation system and communication applications, Beidou satellite navigation and communication equipment have been widely used in various fields. Since the Beidou short message communication needs to realize the reception and transmission of radio frequency signals between the Beidou short message terminal equipment and the Beidou satellite, the receiving sensitivity and transmission power of the Beidou short message terminal equipment should meet the specified range of the Beidou system, and the Beidou short message terminal equipment The S-frequency point receiving antenna and L-frequency point transmitting antenna need to communicate with the Beidou satellite to ensure reliable communication. For Beidou short message equipment...

AI Technical Summary

Problems solved by technology

Traditional Beidou short-message devices supporting dual antennas have two L-frequency transmission channels, which require high power consumption and high power requirements during transmission, and are not suitable for devices with demanding power consumption and built-in battery-powered devices; and multiple L-frequency transmissions The large size of the channel is not conducive to system integration; because the two L-frequency transmitting antennas transmit the same-frequency uplink Beidou signal at the same time, the traditional Beidou short message equipment supporting dual antennas is likely to cause crosstalk of the uplink Beidou signal and cause communication failure

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